WIPER AND WASHER SYSTEM ECU Power Source Circuit

DESCRIPTION

This circuit provides power to the front wiper motor and operates the front light ECU.

WIRING DIAGRAM

A0019BVE13

PROCEDURE


  1. INSPECT FUSE (WIP)


    1. Remove the WIP fuse from the engine room No. 2 relay block.

    2. Measure the resistance of the fuse.

      Standard resistance
      Tester Connection Condition Specified Condition
      WIP fuse Always Below 1 Ω

    NG

    REPLACE FUSE

    OK

  2. CHECK HARNESS AND CONNECTOR (LIGHT ECU - BATTERY)


    1. A001FBEE02
      *1 Front view of wire harness connector: (to Front Controller)

      Disconnect the A51 light ECU connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      A51-2 - Body ground Engine switch on (IG) 11 to 14 V
      A51-2 - Body ground Engine switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (LIGHT ECU - BODY GROUND)


    1. A001C3EE02
      *1 Front view of wire harness connector: (to Front Controller)

      Disconnect the A50 ECU connectors.

    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      A50-2 - Body ground Always Below 1 Ω

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR